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2023 Fiscal Year Final Research Report

Mechanistic insight of autophagosome formation in relation with ER

Research Project

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Project/Area Number 21K06152
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 44010:Cell biology-related
Research InstitutionOsaka University

Principal Investigator

Hamasaki Maho  大阪大学, 大学院生命機能研究科, 准教授 (30455216)

Project Period (FY) 2021-04-01 – 2024-03-31
Keywordsオートファジー / 分解 / 小胞体 / 小胞体ミトコンドリア接触部位
Outline of Final Research Achievements

In this study, we have elucidated the mechanism of the early steps of autophagosome formation mechanism using state-of-the-art imaging methods, proteomics, and biochemistry. Proteomics of the endoplasmic the secretary pathway has led to the analysis of candidate factors, and we have elucidated how the upstream autophagy-related proteins, which normally reside in the cytoplasm, are translocated to the autophagosome formation site. Next, we analyzed in detail the formation site of the early step of autophagosome membrane formation, and have obtained new findings on the early forming structures in VPS34KO cells using the CLEM method. Also, we narrowed down the candidate factors to three that had strong results in the proteomics of endoplasmic reticulum-mitochondria contact sites.

Free Research Field

細胞生物

Academic Significance and Societal Importance of the Research Achievements

オートファジーは細胞内大規模分解システムとして発見され、今では様々な疾患と関わることがわかってきた。オートファジーの分子機構の研究は、今後明らかになっている疾患治療に繋げるためには不可欠である。基礎研究の成果は長期間かかるが必ず将来に生かされる情報である。本研究で明らかにしたオートファジー誘導時の初期機構を明らかにできたことは、オートファジーの亢進や抑制の制御機構にも繋がりうる内容で、将来的に疾患の治療薬の開発につながることが期待される。

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Published: 2025-01-30  

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